/Engine/Source/Runtime/Experimental/Chaos/Public/PhysicsProxy/GeometryCollectionPhysicsProxy.h
const [TArray](API\Runtime\Core\Containers\TArray)< int32 > * FindInternalClusterChildrenTransformIndices_External ( [FGeometryCollectionItemIndex](API\Runtime\Chaos\PhysicsProxy\FGeometryCollectionItemIndex) ItemIndex ) const